• Early AM

    Jul 13

    Lo 69°

    Partly cloudy

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      79°
    • Hi
      RealFeel
      90°
    • Wind
      Speed
      6 mph
    more
  • Today

    Jul 13

    90°Lo 72°

    An afternoon t-storm or two

    Poor for home energy
    • Avg
      RealFeel
      86°
    • Hi
      RealFeel
      99°
    • Wind
      Speed
      7 mph
  • Mon

    Jul 14

    90°Lo 69°

    Strong t-storms, mainly later

    Poor for home energy
    • Avg
      RealFeel
      84°
    • Hi
      RealFeel
      101°
    • Wind
      Speed
      6 mph
    more
  • Tue

    Jul 15

    84°Lo 62°

    Heavy t-storms; not as hot

    Poor for home energy
    • Avg
      RealFeel
      73°
    • Hi
      RealFeel
      86°
    • Wind
      Speed
      8 mph
    more
  • Wed

    Jul 16

    81°Lo 61°

    Partly sunny and pleasant

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      73°
    • Hi
      RealFeel
      86°
    • Wind
      Speed
      5 mph
    more
Next Previous
Hi 90° RealFeel® 99° Precipitation 60%

Day

N

E

S

W

  • SW 7 mph
  • Gusts: 12 mph

Humid with sunshine mixing with some clouds; an afternoon thunderstorm or two

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 60%
  • Precipitation: 0.1 in
  • Rain: 0.1 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 72° RealFeel® 72° Precipitation 62%

Night

N

E

S

W

  • SSW 4 mph
  • Gusts: 7 mph

Mainly cloudy with a couple of showers and a thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.34 in
  • Rain: 0.34 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 4 hrs
  • Hours of Rain: 4 hrs

Temperature History - Jul 13

more Historical Weather Data >
  Today Normal Record 7/13/2013
High 90° 89° 100° (1954) 86°
Low 72° 71° 56° (1888) 72°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:53 AM with 14:42 of sunlight, then sets at 8:35 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:36 PM with 10:45 of moolight, then sets at 7:21 AM

Top Story

Rockville Weather Report

DC: Severe Storm, Flooding Threat to Start the New Week

July 12, 2014; 5:34 PM ET

The risk of severe thunderstorms and flash flooding will ramp up quickly for the start of the new week. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Sun. Home Energy Efficiency

Sun. Degree Days

Sun. UV Index